Summary:Stick to whichever library you already have on your CLASSPATH.If you get a choice, Reactor is preferable, RxJava 2.x is still a good alternativeIn case you’re on Android, then RxJava 2.x is your only choice
Table of contents:APIType-safetyChecked exceptionsTestingDebuggingSpring supportAndroid developmentMaturitySummary
Many people ask me, which library to use in their new projects (if any). Some are concerned that they learned RxJava 1.x and then 2.x came along, and the Reactor. Which one should they use? And some also wonder, what’s with this new java.util.concurrent.Flow? Let me clarify a few things. First of all, both versions of RxJava and Reactor are quite similar from a functional perspective. If you know 1.x or 2.x, Reactor will be very familiar, though you still have to learn about the differences. Secondly, Flow class (a set of interfaces, to be precise) is part of a reactive streams specification, bundled into JDK. This specification dictates that various reactive …